-94.57% is the change from 921 to 50
Calculation steps:
[( 50 - 921 ) ÷ 921] x 100 = -94.57%
Formula
Percentage change = [(50 - 921) / 921] x 100
Subtract the new number by the original number
50 - 921 = -871
-871 ÷ 921 = -0.9457111834961998
-0.9457111834961998 x 100 = -94.57%