-99% is the change from 602 to 6
Calculation steps:
[( 6 - 602 ) ÷ 602] x 100 = -99%
Formula
Percentage change = [(6 - 602) / 602] x 100
Subtract the new number by the original number
6 - 602 = -596
-596 ÷ 602 = -0.9900332225913622
-0.9900332225913622 x 100 = -99%