-98.89% is the change from 628 to 7
Calculation steps:
[( 7 - 628 ) ÷ 628] x 100 = -98.89%
Formula
Percentage change = [(7 - 628) / 628] x 100
Subtract the new number by the original number
7 - 628 = -621
-621 ÷ 628 = -0.9888535031847133
-0.9888535031847133 x 100 = -98.89%