-87.84% is the change from 518 to 63
Calculation steps:
[( 63 - 518 ) ÷ 518] x 100 = -87.84%
Formula
Percentage change = [(63 - 518) / 518] x 100
Subtract the new number by the original number
63 - 518 = -455
-455 ÷ 518 = -0.8783783783783784
-0.8783783783783784 x 100 = -87.84%