-70.58% is the change from 921 to 271
Calculation steps:
[( 271 - 921 ) ÷ 921] x 100 = -70.58%
Formula
Percentage change = [(271 - 921) / 921] x 100
Subtract the new number by the original number
271 - 921 = -650
-650 ÷ 921 = -0.7057546145494028
-0.7057546145494028 x 100 = -70.58%