433.33% is the change from 60 to 320
Calculation steps:
[( 320 - 60 ) ÷ 60] x 100 = 433.33%
Formula
Percentage change = [(320 - 60) / 60] x 100
Subtract the new number by the original number
320 - 60 = 260
260 ÷ 60 = 4.333333333333333
4.333333333333333 x 100 = 433.33%