55.48% is the change from 620 to 964
Calculation steps:
[( 964 - 620 ) ÷ 620] x 100 = 55.48%
Formula
Percentage change = [(964 - 620) / 620] x 100
Subtract the new number by the original number
964 - 620 = 344
344 ÷ 620 = 0.5548387096774193
0.5548387096774193 x 100 = 55.48%