-29.02% is the change from 641 to 455
Calculation steps:
[( 455 - 641 ) ÷ 641] x 100 = -29.02%
Formula
Percentage change = [(455 - 641) / 641] x 100
Subtract the new number by the original number
455 - 641 = -186
-186 ÷ 641 = -0.29017160686427457
-0.29017160686427457 x 100 = -29.02%