-37.38% is the change from 206 to 129
Calculation steps:
[( 129 - 206 ) ÷ 206] x 100 = -37.38%
Formula
Percentage change = [(129 - 206) / 206] x 100
Subtract the new number by the original number
129 - 206 = -77
-77 ÷ 206 = -0.3737864077669903
-0.3737864077669903 x 100 = -37.38%