19.76% is the change from 678 to 812
Calculation steps:
[( 812 - 678 ) ÷ 678] x 100 = 19.76%
Formula
Percentage change = [(812 - 678) / 678] x 100
Subtract the new number by the original number
812 - 678 = 134
134 ÷ 678 = 0.1976401179941003
0.1976401179941003 x 100 = 19.76%