35.36% is the change from 642 to 869
Calculation steps:
[( 869 - 642 ) ÷ 642] x 100 = 35.36%
Formula
Percentage change = [(869 - 642) / 642] x 100
Subtract the new number by the original number
869 - 642 = 227
227 ÷ 642 = 0.35358255451713394
0.35358255451713394 x 100 = 35.36%