-10.27% is the change from 691 to 620
Calculation steps:
[( 620 - 691 ) ÷ 691] x 100 = -10.27%
Formula
Percentage change = [(620 - 691) / 691] x 100
Subtract the new number by the original number
620 - 691 = -71
-71 ÷ 691 = -0.10274963820549927
-0.10274963820549927 x 100 = -10.27%