83.03% is the change from 277 to 507
Calculation steps:
[( 507 - 277 ) ÷ 277] x 100 = 83.03%
Formula
Percentage change = [(507 - 277) / 277] x 100
Subtract the new number by the original number
507 - 277 = 230
230 ÷ 277 = 0.8303249097472925
0.8303249097472925 x 100 = 83.03%