-69.16% is the change from 921 to 284
Calculation steps:
[( 284 - 921 ) ÷ 921] x 100 = -69.16%
Formula
Percentage change = [(284 - 921) / 921] x 100
Subtract the new number by the original number
284 - 921 = -637
-637 ÷ 921 = -0.6916395222584147
-0.6916395222584147 x 100 = -69.16%