-90.5% is the change from 516 to 49
Calculation steps:
[( 49 - 516 ) ÷ 516] x 100 = -90.5%
Formula
Percentage change = [(49 - 516) / 516] x 100
Subtract the new number by the original number
49 - 516 = -467
-467 ÷ 516 = -0.9050387596899225
-0.9050387596899225 x 100 = -90.5%