-47.3% is the change from 408 to 215
Calculation steps:
[( 215 - 408 ) ÷ 408] x 100 = -47.3%
Formula
Percentage change = [(215 - 408) / 408] x 100
Subtract the new number by the original number
215 - 408 = -193
-193 ÷ 408 = -0.4730392156862745
-0.4730392156862745 x 100 = -47.3%