-2.46% is the change from 650 to 634
Calculation steps:
[( 634 - 650 ) ÷ 650] x 100 = -2.46%
Formula
Percentage change = [(634 - 650) / 650] x 100
Subtract the new number by the original number
634 - 650 = -16
-16 ÷ 650 = -0.024615384615384615
-0.024615384615384615 x 100 = -2.46%