-39.62% is the change from 997 to 602
Calculation steps:
[( 602 - 997 ) ÷ 997] x 100 = -39.62%
Formula
Percentage change = [(602 - 997) / 997] x 100
Subtract the new number by the original number
602 - 997 = -395
-395 ÷ 997 = -0.39618856569709127
-0.39618856569709127 x 100 = -39.62%