-12.9% is the change from 217 to 189
Calculation steps:
[( 189 - 217 ) ÷ 217] x 100 = -12.9%
Formula
Percentage change = [(189 - 217) / 217] x 100
Subtract the new number by the original number
189 - 217 = -28
-28 ÷ 217 = -0.12903225806451613
-0.12903225806451613 x 100 = -12.9%