-35% is the change from 100 to 65
Calculation steps:
[( 65 - 100 ) ÷ 100] x 100 = -35%
Formula
Percentage change = [(65 - 100) / 100] x 100
Subtract the new number by the original number
65 - 100 = -35
-35 ÷ 100 = -0.35
-0.35 x 100 = -35%
Example