-98.85% is the change from 611 to 7
Calculation steps:
[( 7 - 611 ) ÷ 611] x 100 = -98.85%
Formula
Percentage change = [(7 - 611) / 611] x 100
Subtract the new number by the original number
7 - 611 = -604
-604 ÷ 611 = -0.9885433715220949
-0.9885433715220949 x 100 = -98.85%