-70.11% is the change from 455 to 136
Calculation steps:
[( 136 - 455 ) ÷ 455] x 100 = -70.11%
Formula
Percentage change = [(136 - 455) / 455] x 100
Subtract the new number by the original number
136 - 455 = -319
-319 ÷ 455 = -0.701098901098901
-0.701098901098901 x 100 = -70.11%