-22.67% is the change from 644 to 498
Calculation steps:
[( 498 - 644 ) ÷ 644] x 100 = -22.67%
Formula
Percentage change = [(498 - 644) / 644] x 100
Subtract the new number by the original number
498 - 644 = -146
-146 ÷ 644 = -0.2267080745341615
-0.2267080745341615 x 100 = -22.67%