-89.14% is the change from 912 to 99
Calculation steps:
[( 99 - 912 ) ÷ 912] x 100 = -89.14%
Formula
Percentage change = [(99 - 912) / 912] x 100
Subtract the new number by the original number
99 - 912 = -813
-813 ÷ 912 = -0.8914473684210527
-0.8914473684210527 x 100 = -89.14%