-31.08% is the change from 415 to 286
Calculation steps:
[( 286 - 415 ) ÷ 415] x 100 = -31.08%
Formula
Percentage change = [(286 - 415) / 415] x 100
Subtract the new number by the original number
286 - 415 = -129
-129 ÷ 415 = -0.3108433734939759
-0.3108433734939759 x 100 = -31.08%