-98.94% is the change from 662 to 7
Calculation steps:
[( 7 - 662 ) ÷ 662] x 100 = -98.94%
Formula
Percentage change = [(7 - 662) / 662] x 100
Subtract the new number by the original number
7 - 662 = -655
-655 ÷ 662 = -0.9894259818731118
-0.9894259818731118 x 100 = -98.94%