36.34% is the change from 644 to 878
Calculation steps:
[( 878 - 644 ) ÷ 644] x 100 = 36.34%
Formula
Percentage change = [(878 - 644) / 644] x 100
Subtract the new number by the original number
878 - 644 = 234
234 ÷ 644 = 0.36335403726708076
0.36335403726708076 x 100 = 36.34%