-29.28% is the change from 912 to 645
Calculation steps:
[( 645 - 912 ) ÷ 912] x 100 = -29.28%
Formula
Percentage change = [(645 - 912) / 912] x 100
Subtract the new number by the original number
645 - 912 = -267
-267 ÷ 912 = -0.29276315789473684
-0.29276315789473684 x 100 = -29.28%