-16.28% is the change from 215 to 180
Calculation steps:
[( 180 - 215 ) ÷ 215] x 100 = -16.28%
Formula
Percentage change = [(180 - 215) / 215] x 100
Subtract the new number by the original number
180 - 215 = -35
-35 ÷ 215 = -0.16279069767441862
-0.16279069767441862 x 100 = -16.28%