-48.86% is the change from 307 to 157
Calculation steps:
[( 157 - 307 ) ÷ 307] x 100 = -48.86%
Formula
Percentage change = [(157 - 307) / 307] x 100
Subtract the new number by the original number
157 - 307 = -150
-150 ÷ 307 = -0.48859934853420195
-0.48859934853420195 x 100 = -48.86%