6.42% is the change from 857 to 912
Calculation steps:
[( 912 - 857 ) ÷ 857] x 100 = 6.42%
Formula
Percentage change = [(912 - 857) / 857] x 100
Subtract the new number by the original number
912 - 857 = 55
55 ÷ 857 = 0.06417736289381563
0.06417736289381563 x 100 = 6.42%