-93.16% is the change from 921 to 63
Calculation steps:
[( 63 - 921 ) ÷ 921] x 100 = -93.16%
Formula
Percentage change = [(63 - 921) / 921] x 100
Subtract the new number by the original number
63 - 921 = -858
-858 ÷ 921 = -0.9315960912052117
-0.9315960912052117 x 100 = -93.16%