25.86% is the change from 642 to 808
Calculation steps:
[( 808 - 642 ) ÷ 642] x 100 = 25.86%
Formula
Percentage change = [(808 - 642) / 642] x 100
Subtract the new number by the original number
808 - 642 = 166
166 ÷ 642 = 0.2585669781931464
0.2585669781931464 x 100 = 25.86%