-39.57% is the change from 460 to 278
Calculation steps:
[( 278 - 460 ) ÷ 460] x 100 = -39.57%
Formula
Percentage change = [(278 - 460) / 460] x 100
Subtract the new number by the original number
278 - 460 = -182
-182 ÷ 460 = -0.39565217391304347
-0.39565217391304347 x 100 = -39.57%