-11.66% is the change from 669 to 591
Calculation steps:
[( 591 - 669 ) ÷ 669] x 100 = -11.66%
Formula
Percentage change = [(591 - 669) / 669] x 100
Subtract the new number by the original number
591 - 669 = -78
-78 ÷ 669 = -0.11659192825112108
-0.11659192825112108 x 100 = -11.66%