3.16% is the change from 950 to 980
Calculation steps:
[( 980 - 950 ) ÷ 950] x 100 = 3.16%
Formula
Percentage change = [(980 - 950) / 950] x 100
Subtract the new number by the original number
980 - 950 = 30
30 ÷ 950 = 0.031578947368421054
0.031578947368421054 x 100 = 3.16%