-57.23% is the change from 318 to 136
Calculation steps:
[( 136 - 318 ) ÷ 318] x 100 = -57.23%
Formula
Percentage change = [(136 - 318) / 318] x 100
Subtract the new number by the original number
136 - 318 = -182
-182 ÷ 318 = -0.5723270440251572
-0.5723270440251572 x 100 = -57.23%