-21.4% is the change from 215 to 169
Calculation steps:
[( 169 - 215 ) ÷ 215] x 100 = -21.4%
Formula
Percentage change = [(169 - 215) / 215] x 100
Subtract the new number by the original number
169 - 215 = -46
-46 ÷ 215 = -0.21395348837209302
-0.21395348837209302 x 100 = -21.4%