87.08% is the change from 271 to 507
Calculation steps:
[( 507 - 271 ) ÷ 271] x 100 = 87.08%
Formula
Percentage change = [(507 - 271) / 271] x 100
Subtract the new number by the original number
507 - 271 = 236
236 ÷ 271 = 0.8708487084870848
0.8708487084870848 x 100 = 87.08%