-17.51% is the change from 217 to 179
Calculation steps:
[( 179 - 217 ) ÷ 217] x 100 = -17.51%
Formula
Percentage change = [(179 - 217) / 217] x 100
Subtract the new number by the original number
179 - 217 = -38
-38 ÷ 217 = -0.17511520737327188
-0.17511520737327188 x 100 = -17.51%