-90.24% is the change from 717 to 70
Calculation steps:
[( 70 - 717 ) ÷ 717] x 100 = -90.24%
Formula
Percentage change = [(70 - 717) / 717] x 100
Subtract the new number by the original number
70 - 717 = -647
-647 ÷ 717 = -0.902370990237099
-0.902370990237099 x 100 = -90.24%