-55.41% is the change from 305 to 136
Calculation steps:
[( 136 - 305 ) ÷ 305] x 100 = -55.41%
Formula
Percentage change = [(136 - 305) / 305] x 100
Subtract the new number by the original number
136 - 305 = -169
-169 ÷ 305 = -0.5540983606557377
-0.5540983606557377 x 100 = -55.41%