-6.33% is the change from 664 to 622
Calculation steps:
[( 622 - 664 ) ÷ 664] x 100 = -6.33%
Formula
Percentage change = [(622 - 664) / 664] x 100
Subtract the new number by the original number
622 - 664 = -42
-42 ÷ 664 = -0.06325301204819277
-0.06325301204819277 x 100 = -6.33%