20.74% is the change from 405 to 489
Calculation steps:
[( 489 - 405 ) ÷ 405] x 100 = 20.74%
Formula
Percentage change = [(489 - 405) / 405] x 100
Subtract the new number by the original number
489 - 405 = 84
84 ÷ 405 = 0.2074074074074074
0.2074074074074074 x 100 = 20.74%