-82.78% is the change from 633 to 109
Calculation steps:
[( 109 - 633 ) ÷ 633] x 100 = -82.78%
Formula
Percentage change = [(109 - 633) / 633] x 100
Subtract the new number by the original number
109 - 633 = -524
-524 ÷ 633 = -0.8278041074249605
-0.8278041074249605 x 100 = -82.78%