-6.47% is the change from 232 to 217
Calculation steps:
[( 217 - 232 ) ÷ 232] x 100 = -6.47%
Formula
Percentage change = [(217 - 232) / 232] x 100
Subtract the new number by the original number
217 - 232 = -15
-15 ÷ 232 = -0.06465517241379311
-0.06465517241379311 x 100 = -6.47%