-7.33% is the change from 232 to 215
Calculation steps:
[( 215 - 232 ) ÷ 232] x 100 = -7.33%
Formula
Percentage change = [(215 - 232) / 232] x 100
Subtract the new number by the original number
215 - 232 = -17
-17 ÷ 232 = -0.07327586206896551
-0.07327586206896551 x 100 = -7.33%