84.38% is the change from 288 to 531
Calculation steps:
[( 531 - 288 ) ÷ 288] x 100 = 84.38%
Formula
Percentage change = [(531 - 288) / 288] x 100
Subtract the new number by the original number
531 - 288 = 243
243 ÷ 288 = 0.84375
0.84375 x 100 = 84.38%