-62.9% is the change from 345 to 128
Calculation steps:
[( 128 - 345 ) ÷ 345] x 100 = -62.9%
Formula
Percentage change = [(128 - 345) / 345] x 100
Subtract the new number by the original number
128 - 345 = -217
-217 ÷ 345 = -0.6289855072463768
-0.6289855072463768 x 100 = -62.9%