66.91% is the change from 278 to 464
Calculation steps:
[( 464 - 278 ) ÷ 278] x 100 = 66.91%
Formula
Percentage change = [(464 - 278) / 278] x 100
Subtract the new number by the original number
464 - 278 = 186
186 ÷ 278 = 0.6690647482014388
0.6690647482014388 x 100 = 66.91%