-97.86% is the change from 513 to 11
Calculation steps:
[( 11 - 513 ) ÷ 513] x 100 = -97.86%
Formula
Percentage change = [(11 - 513) / 513] x 100
Subtract the new number by the original number
11 - 513 = -502
-502 ÷ 513 = -0.9785575048732943
-0.9785575048732943 x 100 = -97.86%