-83.82% is the change from 921 to 149
Calculation steps:
[( 149 - 921 ) ÷ 921] x 100 = -83.82%
Formula
Percentage change = [(149 - 921) / 921] x 100
Subtract the new number by the original number
149 - 921 = -772
-772 ÷ 921 = -0.8382193268186754
-0.8382193268186754 x 100 = -83.82%