-99.03% is the change from 721 to 7
Calculation steps:
[( 7 - 721 ) ÷ 721] x 100 = -99.03%
Formula
Percentage change = [(7 - 721) / 721] x 100
Subtract the new number by the original number
7 - 721 = -714
-714 ÷ 721 = -0.9902912621359223
-0.9902912621359223 x 100 = -99.03%