-62.09% is the change from 641 to 243
Calculation steps:
[( 243 - 641 ) ÷ 641] x 100 = -62.09%
Formula
Percentage change = [(243 - 641) / 641] x 100
Subtract the new number by the original number
243 - 641 = -398
-398 ÷ 641 = -0.6209048361934477
-0.6209048361934477 x 100 = -62.09%