-9.08% is the change from 650 to 591
Calculation steps:
[( 591 - 650 ) ÷ 650] x 100 = -9.08%
Formula
Percentage change = [(591 - 650) / 650] x 100
Subtract the new number by the original number
591 - 650 = -59
-59 ÷ 650 = -0.09076923076923077
-0.09076923076923077 x 100 = -9.08%