-13.95% is the change from 215 to 185
Calculation steps:
[( 185 - 215 ) ÷ 215] x 100 = -13.95%
Formula
Percentage change = [(185 - 215) / 215] x 100
Subtract the new number by the original number
185 - 215 = -30
-30 ÷ 215 = -0.13953488372093023
-0.13953488372093023 x 100 = -13.95%