83.7% is the change from 276 to 507
Calculation steps:
[( 507 - 276 ) ÷ 276] x 100 = 83.7%
Formula
Percentage change = [(507 - 276) / 276] x 100
Subtract the new number by the original number
507 - 276 = 231
231 ÷ 276 = 0.8369565217391305
0.8369565217391305 x 100 = 83.7%