47.51% is the change from 642 to 947
Calculation steps:
[( 947 - 642 ) ÷ 642] x 100 = 47.51%
Formula
Percentage change = [(947 - 642) / 642] x 100
Subtract the new number by the original number
947 - 642 = 305
305 ÷ 642 = 0.4750778816199377
0.4750778816199377 x 100 = 47.51%