-95.55% is the change from 517 to 23
Calculation steps:
[( 23 - 517 ) ÷ 517] x 100 = -95.55%
Formula
Percentage change = [(23 - 517) / 517] x 100
Subtract the new number by the original number
23 - 517 = -494
-494 ÷ 517 = -0.9555125725338491
-0.9555125725338491 x 100 = -95.55%