-90.72% is the change from 938 to 87
Calculation steps:
[( 87 - 938 ) ÷ 938] x 100 = -90.72%
Formula
Percentage change = [(87 - 938) / 938] x 100
Subtract the new number by the original number
87 - 938 = -851
-851 ÷ 938 = -0.9072494669509595
-0.9072494669509595 x 100 = -90.72%