67.79% is the change from 503 to 844
Calculation steps:
[( 844 - 503 ) ÷ 503] x 100 = 67.79%
Formula
Percentage change = [(844 - 503) / 503] x 100
Subtract the new number by the original number
844 - 503 = 341
341 ÷ 503 = 0.6779324055666004
0.6779324055666004 x 100 = 67.79%