27.02% is the change from 644 to 818
Calculation steps:
[( 818 - 644 ) ÷ 644] x 100 = 27.02%
Formula
Percentage change = [(818 - 644) / 644] x 100
Subtract the new number by the original number
818 - 644 = 174
174 ÷ 644 = 0.2701863354037267
0.2701863354037267 x 100 = 27.02%