-69.84% is the change from 451 to 136
Calculation steps:
[( 136 - 451 ) ÷ 451] x 100 = -69.84%
Formula
Percentage change = [(136 - 451) / 451] x 100
Subtract the new number by the original number
136 - 451 = -315
-315 ÷ 451 = -0.6984478935698448
-0.6984478935698448 x 100 = -69.84%