START
ACTIVE
PERCENT %
TAP
END
TAP
CALCULATE
TAP
WORKING
—
—
—
—
RESULT
READY
—
—
—
PAGE 1/2
FORMULAS
END = START × (1 ± P/100)
START = END ÷ (1 ± P/100)
WHEN TO USE
END if you know the start value
START if you only know the final value
INCREASE = add % • DECREASE = subtract %
WORKED EXAMPLES
Example A (INCREASE, solve END)
START = 80, P = 25
MULT = 1 + 25/100 = 1.25
END = 80 × 1.25 = 100
Example B (DECREASE, solve START)
END = 100, P = 25
DIV = 1 − 25/100 = 0.75
START = 100 ÷ 0.75 = 133.33…
KEYS
ENTER calculates • ESC clears
I help • P back
PAGE 2/2
START
ACTIVE
PERCENT %
TAP
END
TAP
CALCULATE
TAP
WORKING
—
—
—
—
RESULT
READY
—
—
—
PAGE 1/2
FORMULAS
END = START × (1 ± P/100)
START = END ÷ (1 ± P/100)
HOW TO USE
Pick INCREASE or DECREASE
Choose solve END or START
Enter the known values
Press CALCULATE
WORKED EXAMPLES
Example A (INCREASE, solve END)
START = 80, P = 25
MULT = 1 + 25/100 = 1.25
END = 80 × 1.25 = 100
Example B (DECREASE, solve START)
END = 100, P = 25
DIV = 1 − 25/100 = 0.75
START = 100 ÷ 0.75 = 133.33…
KEYS
ENTER calculates
ESC clears
I help • P back
PAGE 2/2