-6.62% is the change from 650 to 607
Calculation steps:
[( 607 - 650 ) ÷ 650] x 100 = -6.62%
Formula
Percentage change = [(607 - 650) / 650] x 100
Subtract the new number by the original number
607 - 650 = -43
-43 ÷ 650 = -0.06615384615384616
-0.06615384615384616 x 100 = -6.62%