-31.76% is the change from 233 to 159
Calculation steps:
[( 159 - 233 ) ÷ 233] x 100 = -31.76%
Formula
Percentage change = [(159 - 233) / 233] x 100
Subtract the new number by the original number
159 - 233 = -74
-74 ÷ 233 = -0.31759656652360513
-0.31759656652360513 x 100 = -31.76%