51.16% is the change from 647 to 978
Calculation steps:
[( 978 - 647 ) ÷ 647] x 100 = 51.16%
Formula
Percentage change = [(978 - 647) / 647] x 100
Subtract the new number by the original number
978 - 647 = 331
331 ÷ 647 = 0.5115919629057187
0.5115919629057187 x 100 = 51.16%