-33.66% is the change from 615 to 408
Calculation steps:
[( 408 - 615 ) ÷ 615] x 100 = -33.66%
Formula
Percentage change = [(408 - 615) / 615] x 100
Subtract the new number by the original number
408 - 615 = -207
-207 ÷ 615 = -0.33658536585365856
-0.33658536585365856 x 100 = -33.66%