50% is the change from 650 to 975
Calculation steps:
[( 975 - 650 ) ÷ 650] x 100 = 50%
Formula
Percentage change = [(975 - 650) / 650] x 100
Subtract the new number by the original number
975 - 650 = 325
325 ÷ 650 = 0.5
0.5 x 100 = 50%
Example