-51.24% is the change from 322 to 157
Calculation steps:
[( 157 - 322 ) ÷ 322] x 100 = -51.24%
Formula
Percentage change = [(157 - 322) / 322] x 100
Subtract the new number by the original number
157 - 322 = -165
-165 ÷ 322 = -0.5124223602484472
-0.5124223602484472 x 100 = -51.24%