-90.65% is the change from 706 to 66
Calculation steps:
[( 66 - 706 ) ÷ 706] x 100 = -90.65%
Formula
Percentage change = [(66 - 706) / 706] x 100
Subtract the new number by the original number
66 - 706 = -640
-640 ÷ 706 = -0.9065155807365439
-0.9065155807365439 x 100 = -90.65%