-98.86% is the change from 612 to 7
Calculation steps:
[( 7 - 612 ) ÷ 612] x 100 = -98.86%
Formula
Percentage change = [(7 - 612) / 612] x 100
Subtract the new number by the original number
7 - 612 = -605
-605 ÷ 612 = -0.988562091503268
-0.988562091503268 x 100 = -98.86%