-83.72% is the change from 817 to 133
Calculation steps:
[( 133 - 817 ) ÷ 817] x 100 = -83.72%
Formula
Percentage change = [(133 - 817) / 817] x 100
Subtract the new number by the original number
133 - 817 = -684
-684 ÷ 817 = -0.8372093023255814
-0.8372093023255814 x 100 = -83.72%