-29.92% is the change from 615 to 431
Calculation steps:
[( 431 - 615 ) ÷ 615] x 100 = -29.92%
Formula
Percentage change = [(431 - 615) / 615] x 100
Subtract the new number by the original number
431 - 615 = -184
-184 ÷ 615 = -0.2991869918699187
-0.2991869918699187 x 100 = -29.92%