47.28% is the change from 643 to 947
Calculation steps:
[( 947 - 643 ) ÷ 643] x 100 = 47.28%
Formula
Percentage change = [(947 - 643) / 643] x 100
Subtract the new number by the original number
947 - 643 = 304
304 ÷ 643 = 0.4727838258164852
0.4727838258164852 x 100 = 47.28%