-56.33% is the change from 229 to 100
Calculation steps:
[( 100 - 229 ) ÷ 229] x 100 = -56.33%
Formula
Percentage change = [(100 - 229) / 229] x 100
Subtract the new number by the original number
100 - 229 = -129
-129 ÷ 229 = -0.5633187772925764
-0.5633187772925764 x 100 = -56.33%