79.4% is the change from 500 to 897
Calculation steps:
[( 897 - 500 ) ÷ 500] x 100 = 79.4%
Formula
Percentage change = [(897 - 500) / 500] x 100
Subtract the new number by the original number
897 - 500 = 397
397 ÷ 500 = 0.794
0.794 x 100 = 79.4%
Example