57.23% is the change from 311 to 489
Calculation steps:
[( 489 - 311 ) ÷ 311] x 100 = 57.23%
Formula
Percentage change = [(489 - 311) / 311] x 100
Subtract the new number by the original number
489 - 311 = 178
178 ÷ 311 = 0.572347266881029
0.572347266881029 x 100 = 57.23%