-86.04% is the change from 623 to 87
Calculation steps:
[( 87 - 623 ) ÷ 623] x 100 = -86.04%
Formula
Percentage change = [(87 - 623) / 623] x 100
Subtract the new number by the original number
87 - 623 = -536
-536 ÷ 623 = -0.8603531300160514
-0.8603531300160514 x 100 = -86.04%