61.15% is the change from 278 to 448
Calculation steps:
[( 448 - 278 ) ÷ 278] x 100 = 61.15%
Formula
Percentage change = [(448 - 278) / 278] x 100
Subtract the new number by the original number
448 - 278 = 170
170 ÷ 278 = 0.6115107913669064
0.6115107913669064 x 100 = 61.15%