-49.85% is the change from 674 to 338
Calculation steps:
[( 338 - 674 ) ÷ 674] x 100 = -49.85%
Formula
Percentage change = [(338 - 674) / 674] x 100
Subtract the new number by the original number
338 - 674 = -336
-336 ÷ 674 = -0.49851632047477745
-0.49851632047477745 x 100 = -49.85%