16.3% is the change from 276 to 321
Calculation steps:
[( 321 - 276 ) ÷ 276] x 100 = 16.3%
Formula
Percentage change = [(321 - 276) / 276] x 100
Subtract the new number by the original number
321 - 276 = 45
45 ÷ 276 = 0.16304347826086957
0.16304347826086957 x 100 = 16.3%