-27.36% is the change from 296 to 215
Calculation steps:
[( 215 - 296 ) ÷ 296] x 100 = -27.36%
Formula
Percentage change = [(215 - 296) / 296] x 100
Subtract the new number by the original number
215 - 296 = -81
-81 ÷ 296 = -0.27364864864864863
-0.27364864864864863 x 100 = -27.36%