-75.24% is the change from 921 to 228
Calculation steps:
[( 228 - 921 ) ÷ 921] x 100 = -75.24%
Formula
Percentage change = [(228 - 921) / 921] x 100
Subtract the new number by the original number
228 - 921 = -693
-693 ÷ 921 = -0.752442996742671
-0.752442996742671 x 100 = -75.24%