508.7% is the change from 69 to 420
Calculation steps:
[( 420 - 69 ) ÷ 69] x 100 = 508.7%
Formula
Percentage change = [(420 - 69) / 69] x 100
Subtract the new number by the original number
420 - 69 = 351
351 ÷ 69 = 5.086956521739131
5.086956521739131 x 100 = 508.7%