47.34% is the change from 640 to 943
Calculation steps:
[( 943 - 640 ) ÷ 640] x 100 = 47.34%
Formula
Percentage change = [(943 - 640) / 640] x 100
Subtract the new number by the original number
943 - 640 = 303
303 ÷ 640 = 0.4734375
0.4734375 x 100 = 47.34%