-90.1% is the change from 707 to 70
Calculation steps:
[( 70 - 707 ) ÷ 707] x 100 = -90.1%
Formula
Percentage change = [(70 - 707) / 707] x 100
Subtract the new number by the original number
70 - 707 = -637
-637 ÷ 707 = -0.900990099009901
-0.900990099009901 x 100 = -90.1%