-30.57% is the change from 229 to 159
Calculation steps:
[( 159 - 229 ) ÷ 229] x 100 = -30.57%
Formula
Percentage change = [(159 - 229) / 229] x 100
Subtract the new number by the original number
159 - 229 = -70
-70 ÷ 229 = -0.3056768558951965
-0.3056768558951965 x 100 = -30.57%