-43.68% is the change from 87 to 49
Calculation steps:
[( 49 - 87 ) ÷ 87] x 100 = -43.68%
Formula
Percentage change = [(49 - 87) / 87] x 100
Subtract the new number by the original number
49 - 87 = -38
-38 ÷ 87 = -0.4367816091954023
-0.4367816091954023 x 100 = -43.68%