-77.17% is the change from 92 to 21
Calculation steps:
[( 21 - 92 ) ÷ 92] x 100 = -77.17%
Formula
Percentage change = [(21 - 92) / 92] x 100
Subtract the new number by the original number
21 - 92 = -71
-71 ÷ 92 = -0.7717391304347826
-0.7717391304347826 x 100 = -77.17%