-6.87% is the change from 233 to 217
Calculation steps:
[( 217 - 233 ) ÷ 233] x 100 = -6.87%
Formula
Percentage change = [(217 - 233) / 233] x 100
Subtract the new number by the original number
217 - 233 = -16
-16 ÷ 233 = -0.06866952789699571
-0.06866952789699571 x 100 = -6.87%