-75% is the change from 912 to 228
Calculation steps:
[( 228 - 912 ) ÷ 912] x 100 = -75%
Formula
Percentage change = [(228 - 912) / 912] x 100
Subtract the new number by the original number
228 - 912 = -684
-684 ÷ 912 = -0.75
-0.75 x 100 = -75%
Example