-37.86% is the change from 206 to 128
Calculation steps:
[( 128 - 206 ) ÷ 206] x 100 = -37.86%
Formula
Percentage change = [(128 - 206) / 206] x 100
Subtract the new number by the original number
128 - 206 = -78
-78 ÷ 206 = -0.3786407766990291
-0.3786407766990291 x 100 = -37.86%