-41.03% is the change from 641 to 378
Calculation steps:
[( 378 - 641 ) ÷ 641] x 100 = -41.03%
Formula
Percentage change = [(378 - 641) / 641] x 100
Subtract the new number by the original number
378 - 641 = -263
-263 ÷ 641 = -0.41029641185647425
-0.41029641185647425 x 100 = -41.03%