-29.9% is the change from 903 to 633
Calculation steps:
[( 633 - 903 ) ÷ 903] x 100 = -29.9%
Formula
Percentage change = [(633 - 903) / 903] x 100
Subtract the new number by the original number
633 - 903 = -270
-270 ÷ 903 = -0.29900332225913623
-0.29900332225913623 x 100 = -29.9%