-78.16% is the change from 87 to 19
Calculation steps:
[( 19 - 87 ) ÷ 87] x 100 = -78.16%
Formula
Percentage change = [(19 - 87) / 87] x 100
Subtract the new number by the original number
19 - 87 = -68
-68 ÷ 87 = -0.7816091954022989
-0.7816091954022989 x 100 = -78.16%