-57.89% is the change from 323 to 136
Calculation steps:
[( 136 - 323 ) ÷ 323] x 100 = -57.89%
Formula
Percentage change = [(136 - 323) / 323] x 100
Subtract the new number by the original number
136 - 323 = -187
-187 ÷ 323 = -0.5789473684210527
-0.5789473684210527 x 100 = -57.89%