-69.57% is the change from 447 to 136
Calculation steps:
[( 136 - 447 ) ÷ 447] x 100 = -69.57%
Formula
Percentage change = [(136 - 447) / 447] x 100
Subtract the new number by the original number
136 - 447 = -311
-311 ÷ 447 = -0.6957494407158836
-0.6957494407158836 x 100 = -69.57%