-98.03% is the change from 507 to 10
Calculation steps:
[( 10 - 507 ) ÷ 507] x 100 = -98.03%
Formula
Percentage change = [(10 - 507) / 507] x 100
Subtract the new number by the original number
10 - 507 = -497
-497 ÷ 507 = -0.980276134122288
-0.980276134122288 x 100 = -98.03%