-84.02% is the change from 513 to 82
Calculation steps:
[( 82 - 513 ) ÷ 513] x 100 = -84.02%
Formula
Percentage change = [(82 - 513) / 513] x 100
Subtract the new number by the original number
82 - 513 = -431
-431 ÷ 513 = -0.8401559454191033
-0.8401559454191033 x 100 = -84.02%