23.13% is the change from 670 to 825
Calculation steps:
[( 825 - 670 ) ÷ 670] x 100 = 23.13%
Formula
Percentage change = [(825 - 670) / 670] x 100
Subtract the new number by the original number
825 - 670 = 155
155 ÷ 670 = 0.23134328358208955
0.23134328358208955 x 100 = 23.13%