508.49% is the change from 106 to 645
Calculation steps:
[( 645 - 106 ) ÷ 106] x 100 = 508.49%
Formula
Percentage change = [(645 - 106) / 106] x 100
Subtract the new number by the original number
645 - 106 = 539
539 ÷ 106 = 5.084905660377358
5.084905660377358 x 100 = 508.49%