-84.15% is the change from 921 to 146
Calculation steps:
[( 146 - 921 ) ÷ 921] x 100 = -84.15%
Formula
Percentage change = [(146 - 921) / 921] x 100
Subtract the new number by the original number
146 - 921 = -775
-775 ÷ 921 = -0.8414766558089034
-0.8414766558089034 x 100 = -84.15%