27.01% is the change from 670 to 851
Calculation steps:
[( 851 - 670 ) ÷ 670] x 100 = 27.01%
Formula
Percentage change = [(851 - 670) / 670] x 100
Subtract the new number by the original number
851 - 670 = 181
181 ÷ 670 = 0.2701492537313433
0.2701492537313433 x 100 = 27.01%