-62.79% is the change from 344 to 128
Calculation steps:
[( 128 - 344 ) ÷ 344] x 100 = -62.79%
Formula
Percentage change = [(128 - 344) / 344] x 100
Subtract the new number by the original number
128 - 344 = -216
-216 ÷ 344 = -0.627906976744186
-0.627906976744186 x 100 = -62.79%