-82% is the change from 650 to 117
Calculation steps:
[( 117 - 650 ) ÷ 650] x 100 = -82%
Formula
Percentage change = [(117 - 650) / 650] x 100
Subtract the new number by the original number
117 - 650 = -533
-533 ÷ 650 = -0.82
-0.82 x 100 = -82%
Example