0.2% is the change from 997 to 999
Calculation steps:
[( 999 - 997 ) ÷ 997] x 100 = 0.2%
Formula
Percentage change = [(999 - 997) / 997] x 100
Subtract the new number by the original number
999 - 997 = 2
2 ÷ 997 = 0.0020060180541624875
0.0020060180541624875 x 100 = 0.2%