-45.33% is the change from 642 to 351
Calculation steps:
[( 351 - 642 ) ÷ 642] x 100 = -45.33%
Formula
Percentage change = [(351 - 642) / 642] x 100
Subtract the new number by the original number
351 - 642 = -291
-291 ÷ 642 = -0.4532710280373832
-0.4532710280373832 x 100 = -45.33%