-6.8% is the change from 662 to 617
Calculation steps:
[( 617 - 662 ) ÷ 662] x 100 = -6.8%
Formula
Percentage change = [(617 - 662) / 662] x 100
Subtract the new number by the original number
617 - 662 = -45
-45 ÷ 662 = -0.06797583081570997
-0.06797583081570997 x 100 = -6.8%