-97.66% is the change from 513 to 12
Calculation steps:
[( 12 - 513 ) ÷ 513] x 100 = -97.66%
Formula
Percentage change = [(12 - 513) / 513] x 100
Subtract the new number by the original number
12 - 513 = -501
-501 ÷ 513 = -0.9766081871345029
-0.9766081871345029 x 100 = -97.66%