-74.38% is the change from 921 to 236
Calculation steps:
[( 236 - 921 ) ÷ 921] x 100 = -74.38%
Formula
Percentage change = [(236 - 921) / 921] x 100
Subtract the new number by the original number
236 - 921 = -685
-685 ÷ 921 = -0.743756786102063
-0.743756786102063 x 100 = -74.38%