-98.62% is the change from 506 to 7
Calculation steps:
[( 7 - 506 ) ÷ 506] x 100 = -98.62%
Formula
Percentage change = [(7 - 506) / 506] x 100
Subtract the new number by the original number
7 - 506 = -499
-499 ÷ 506 = -0.9861660079051383
-0.9861660079051383 x 100 = -98.62%