2.63% is the change from 304 to 312
Calculation steps:
[( 312 - 304 ) ÷ 304] x 100 = 2.63%
Formula
Percentage change = [(312 - 304) / 304] x 100
Subtract the new number by the original number
312 - 304 = 8
8 ÷ 304 = 0.02631578947368421
0.02631578947368421 x 100 = 2.63%