-91.75% is the change from 921 to 76
Calculation steps:
[( 76 - 921 ) ÷ 921] x 100 = -91.75%
Formula
Percentage change = [(76 - 921) / 921] x 100
Subtract the new number by the original number
76 - 921 = -845
-845 ÷ 921 = -0.9174809989142236
-0.9174809989142236 x 100 = -91.75%