-95.52% is the change from 513 to 23
Calculation steps:
[( 23 - 513 ) ÷ 513] x 100 = -95.52%
Formula
Percentage change = [(23 - 513) / 513] x 100
Subtract the new number by the original number
23 - 513 = -490
-490 ÷ 513 = -0.9551656920077972
-0.9551656920077972 x 100 = -95.52%