115.94% is the change from 320 to 691
Calculation steps:
[( 691 - 320 ) ÷ 320] x 100 = 115.94%
Formula
Percentage change = [(691 - 320) / 320] x 100
Subtract the new number by the original number
691 - 320 = 371
371 ÷ 320 = 1.159375
1.159375 x 100 = 115.94%