-7.3% is the change from 233 to 216
Calculation steps:
[( 216 - 233 ) ÷ 233] x 100 = -7.3%
Formula
Percentage change = [(216 - 233) / 233] x 100
Subtract the new number by the original number
216 - 233 = -17
-17 ÷ 233 = -0.07296137339055794
-0.07296137339055794 x 100 = -7.3%