-89.36% is the change from 517 to 55
Calculation steps:
[( 55 - 517 ) ÷ 517] x 100 = -89.36%
Formula
Percentage change = [(55 - 517) / 517] x 100
Subtract the new number by the original number
55 - 517 = -462
-462 ÷ 517 = -0.8936170212765957
-0.8936170212765957 x 100 = -89.36%