85.21% is the change from 257 to 476
Calculation steps:
[( 476 - 257 ) ÷ 257] x 100 = 85.21%
Formula
Percentage change = [(476 - 257) / 257] x 100
Subtract the new number by the original number
476 - 257 = 219
219 ÷ 257 = 0.8521400778210116
0.8521400778210116 x 100 = 85.21%