-98.07% is the change from 517 to 10
Calculation steps:
[( 10 - 517 ) ÷ 517] x 100 = -98.07%
Formula
Percentage change = [(10 - 517) / 517] x 100
Subtract the new number by the original number
10 - 517 = -507
-507 ÷ 517 = -0.9806576402321083
-0.9806576402321083 x 100 = -98.07%