-62.57% is the change from 342 to 128
Calculation steps:
[( 128 - 342 ) ÷ 342] x 100 = -62.57%
Formula
Percentage change = [(128 - 342) / 342] x 100
Subtract the new number by the original number
128 - 342 = -214
-214 ÷ 342 = -0.6257309941520468
-0.6257309941520468 x 100 = -62.57%