180.94% is the change from 320 to 899
Calculation steps:
[( 899 - 320 ) ÷ 320] x 100 = 180.94%
Formula
Percentage change = [(899 - 320) / 320] x 100
Subtract the new number by the original number
899 - 320 = 579
579 ÷ 320 = 1.809375
1.809375 x 100 = 180.94%