-14.35% is the change from 641 to 549
Calculation steps:
[( 549 - 641 ) ÷ 641] x 100 = -14.35%
Formula
Percentage change = [(549 - 641) / 641] x 100
Subtract the new number by the original number
549 - 641 = -92
-92 ÷ 641 = -0.1435257410296412
-0.1435257410296412 x 100 = -14.35%