49.92% is the change from 647 to 970
Calculation steps:
[( 970 - 647 ) ÷ 647] x 100 = 49.92%
Formula
Percentage change = [(970 - 647) / 647] x 100
Subtract the new number by the original number
970 - 647 = 323
323 ÷ 647 = 0.4992272024729521
0.4992272024729521 x 100 = 49.92%