292.64% is the change from 163 to 640
Calculation steps:
[( 640 - 163 ) ÷ 163] x 100 = 292.64%
Formula
Percentage change = [(640 - 163) / 163] x 100
Subtract the new number by the original number
640 - 163 = 477
477 ÷ 163 = 2.9263803680981595
2.9263803680981595 x 100 = 292.64%