-83.91% is the change from 516 to 83
Calculation steps:
[( 83 - 516 ) ÷ 516] x 100 = -83.91%
Formula
Percentage change = [(83 - 516) / 516] x 100
Subtract the new number by the original number
83 - 516 = -433
-433 ÷ 516 = -0.8391472868217055
-0.8391472868217055 x 100 = -83.91%