-95.66% is the change from 921 to 40
Calculation steps:
[( 40 - 921 ) ÷ 921] x 100 = -95.66%
Formula
Percentage change = [(40 - 921) / 921] x 100
Subtract the new number by the original number
40 - 921 = -881
-881 ÷ 921 = -0.9565689467969598
-0.9565689467969598 x 100 = -95.66%