-91.86% is the change from 921 to 75
Calculation steps:
[( 75 - 921 ) ÷ 921] x 100 = -91.86%
Formula
Percentage change = [(75 - 921) / 921] x 100
Subtract the new number by the original number
75 - 921 = -846
-846 ÷ 921 = -0.9185667752442996
-0.9185667752442996 x 100 = -91.86%