-50.89% is the change from 674 to 331
Calculation steps:
[( 331 - 674 ) ÷ 674] x 100 = -50.89%
Formula
Percentage change = [(331 - 674) / 674] x 100
Subtract the new number by the original number
331 - 674 = -343
-343 ÷ 674 = -0.5089020771513353
-0.5089020771513353 x 100 = -50.89%