-90.56% is the change from 699 to 66
Calculation steps:
[( 66 - 699 ) ÷ 699] x 100 = -90.56%
Formula
Percentage change = [(66 - 699) / 699] x 100
Subtract the new number by the original number
66 - 699 = -633
-633 ÷ 699 = -0.9055793991416309
-0.9055793991416309 x 100 = -90.56%