-90.42% is the change from 929 to 89
Calculation steps:
[( 89 - 929 ) ÷ 929] x 100 = -90.42%
Formula
Percentage change = [(89 - 929) / 929] x 100
Subtract the new number by the original number
89 - 929 = -840
-840 ÷ 929 = -0.9041980624327234
-0.9041980624327234 x 100 = -90.42%