107.78% is the change from 257 to 534
Calculation steps:
[( 534 - 257 ) ÷ 257] x 100 = 107.78%
Formula
Percentage change = [(534 - 257) / 257] x 100
Subtract the new number by the original number
534 - 257 = 277
277 ÷ 257 = 1.0778210116731517
1.0778210116731517 x 100 = 107.78%