22.24% is the change from 670 to 819
Calculation steps:
[( 819 - 670 ) ÷ 670] x 100 = 22.24%
Formula
Percentage change = [(819 - 670) / 670] x 100
Subtract the new number by the original number
819 - 670 = 149
149 ÷ 670 = 0.22238805970149253
0.22238805970149253 x 100 = 22.24%