-30.75% is the change from 917 to 635
Calculation steps:
[( 635 - 917 ) ÷ 917] x 100 = -30.75%
Formula
Percentage change = [(635 - 917) / 917] x 100
Subtract the new number by the original number
635 - 917 = -282
-282 ÷ 917 = -0.3075245365321701
-0.3075245365321701 x 100 = -30.75%