170.7% is the change from 256 to 693
Calculation steps:
[( 693 - 256 ) ÷ 256] x 100 = 170.7%
Formula
Percentage change = [(693 - 256) / 256] x 100
Subtract the new number by the original number
693 - 256 = 437
437 ÷ 256 = 1.70703125
1.70703125 x 100 = 170.7%