-84.64% is the change from 866 to 133
Calculation steps:
[( 133 - 866 ) ÷ 866] x 100 = -84.64%
Formula
Percentage change = [(133 - 866) / 866] x 100
Subtract the new number by the original number
133 - 866 = -733
-733 ÷ 866 = -0.8464203233256351
-0.8464203233256351 x 100 = -84.64%