58.44% is the change from 320 to 507
Calculation steps:
[( 507 - 320 ) ÷ 320] x 100 = 58.44%
Formula
Percentage change = [(507 - 320) / 320] x 100
Subtract the new number by the original number
507 - 320 = 187
187 ÷ 320 = 0.584375
0.584375 x 100 = 58.44%