91.4% is the change from 279 to 534
Calculation steps:
[( 534 - 279 ) ÷ 279] x 100 = 91.4%
Formula
Percentage change = [(534 - 279) / 279] x 100
Subtract the new number by the original number
534 - 279 = 255
255 ÷ 279 = 0.9139784946236559
0.9139784946236559 x 100 = 91.4%