26.81% is the change from 664 to 842
Calculation steps:
[( 842 - 664 ) ÷ 664] x 100 = 26.81%
Formula
Percentage change = [(842 - 664) / 664] x 100
Subtract the new number by the original number
842 - 664 = 178
178 ÷ 664 = 0.2680722891566265
0.2680722891566265 x 100 = 26.81%