-30.04% is the change from 233 to 163
Calculation steps:
[( 163 - 233 ) ÷ 233] x 100 = -30.04%
Formula
Percentage change = [(163 - 233) / 233] x 100
Subtract the new number by the original number
163 - 233 = -70
-70 ÷ 233 = -0.30042918454935624
-0.30042918454935624 x 100 = -30.04%