54.68% is the change from 620 to 959
Calculation steps:
[( 959 - 620 ) ÷ 620] x 100 = 54.68%
Formula
Percentage change = [(959 - 620) / 620] x 100
Subtract the new number by the original number
959 - 620 = 339
339 ÷ 620 = 0.5467741935483871
0.5467741935483871 x 100 = 54.68%