-84.17% is the change from 992 to 157
Calculation steps:
[( 157 - 992 ) ÷ 992] x 100 = -84.17%
Formula
Percentage change = [(157 - 992) / 992] x 100
Subtract the new number by the original number
157 - 992 = -835
-835 ÷ 992 = -0.8417338709677419
-0.8417338709677419 x 100 = -84.17%