-90.12% is the change from 516 to 51
Calculation steps:
[( 51 - 516 ) ÷ 516] x 100 = -90.12%
Formula
Percentage change = [(51 - 516) / 516] x 100
Subtract the new number by the original number
51 - 516 = -465
-465 ÷ 516 = -0.9011627906976745
-0.9011627906976745 x 100 = -90.12%