-85.56% is the change from 921 to 133
Calculation steps:
[( 133 - 921 ) ÷ 921] x 100 = -85.56%
Formula
Percentage change = [(133 - 921) / 921] x 100
Subtract the new number by the original number
133 - 921 = -788
-788 ÷ 921 = -0.8555917480998915
-0.8555917480998915 x 100 = -85.56%