-99.5% is the change from 602 to 3
Calculation steps:
[( 3 - 602 ) ÷ 602] x 100 = -99.5%
Formula
Percentage change = [(3 - 602) / 602] x 100
Subtract the new number by the original number
3 - 602 = -599
-599 ÷ 602 = -0.9950166112956811
-0.9950166112956811 x 100 = -99.5%