78.05% is the change from 287 to 511
Calculation steps:
[( 511 - 287 ) ÷ 287] x 100 = 78.05%
Formula
Percentage change = [(511 - 287) / 287] x 100
Subtract the new number by the original number
511 - 287 = 224
224 ÷ 287 = 0.7804878048780488
0.7804878048780488 x 100 = 78.05%