-97.43% is the change from 662 to 17
Calculation steps:
[( 17 - 662 ) ÷ 662] x 100 = -97.43%
Formula
Percentage change = [(17 - 662) / 662] x 100
Subtract the new number by the original number
17 - 662 = -645
-645 ÷ 662 = -0.974320241691843
-0.974320241691843 x 100 = -97.43%