-21.11% is the change from 630 to 497
Calculation steps:
[( 497 - 630 ) ÷ 630] x 100 = -21.11%
Formula
Percentage change = [(497 - 630) / 630] x 100
Subtract the new number by the original number
497 - 630 = -133
-133 ÷ 630 = -0.2111111111111111
-0.2111111111111111 x 100 = -21.11%