-31.37% is the change from 644 to 442
Calculation steps:
[( 442 - 644 ) ÷ 644] x 100 = -31.37%
Formula
Percentage change = [(442 - 644) / 644] x 100
Subtract the new number by the original number
442 - 644 = -202
-202 ÷ 644 = -0.3136645962732919
-0.3136645962732919 x 100 = -31.37%