-89.47% is the change from 513 to 54
Calculation steps:
[( 54 - 513 ) ÷ 513] x 100 = -89.47%
Formula
Percentage change = [(54 - 513) / 513] x 100
Subtract the new number by the original number
54 - 513 = -459
-459 ÷ 513 = -0.8947368421052632
-0.8947368421052632 x 100 = -89.47%