-23.13% is the change from 307 to 236
Calculation steps:
[( 236 - 307 ) ÷ 307] x 100 = -23.13%
Formula
Percentage change = [(236 - 307) / 307] x 100
Subtract the new number by the original number
236 - 307 = -71
-71 ÷ 307 = -0.23127035830618892
-0.23127035830618892 x 100 = -23.13%