-31.13% is the change from 906 to 624
Calculation steps:
[( 624 - 906 ) ÷ 906] x 100 = -31.13%
Formula
Percentage change = [(624 - 906) / 906] x 100
Subtract the new number by the original number
624 - 906 = -282
-282 ÷ 906 = -0.31125827814569534
-0.31125827814569534 x 100 = -31.13%