-98.85% is the change from 520 to 6
Calculation steps:
[( 6 - 520 ) ÷ 520] x 100 = -98.85%
Formula
Percentage change = [(6 - 520) / 520] x 100
Subtract the new number by the original number
6 - 520 = -514
-514 ÷ 520 = -0.9884615384615385
-0.9884615384615385 x 100 = -98.85%