-53.11% is the change from 273 to 128
Calculation steps:
[( 128 - 273 ) ÷ 273] x 100 = -53.11%
Formula
Percentage change = [(128 - 273) / 273] x 100
Subtract the new number by the original number
128 - 273 = -145
-145 ÷ 273 = -0.5311355311355311
-0.5311355311355311 x 100 = -53.11%