3.13% is the change from 958 to 988
Calculation steps:
[( 988 - 958 ) ÷ 958] x 100 = 3.13%
Formula
Percentage change = [(988 - 958) / 958] x 100
Subtract the new number by the original number
988 - 958 = 30
30 ÷ 958 = 0.031315240083507306
0.031315240083507306 x 100 = 3.13%