56.5% is the change from 623 to 975
Calculation steps:
[( 975 - 623 ) ÷ 623] x 100 = 56.5%
Formula
Percentage change = [(975 - 623) / 623] x 100
Subtract the new number by the original number
975 - 623 = 352
352 ÷ 623 = 0.565008025682183
0.565008025682183 x 100 = 56.5%