-99.72% is the change from 717 to 2
Calculation steps:
[( 2 - 717 ) ÷ 717] x 100 = -99.72%
Formula
Percentage change = [(2 - 717) / 717] x 100
Subtract the new number by the original number
2 - 717 = -715
-715 ÷ 717 = -0.99721059972106
-0.99721059972106 x 100 = -99.72%