-76.44% is the change from 921 to 217
Calculation steps:
[( 217 - 921 ) ÷ 921] x 100 = -76.44%
Formula
Percentage change = [(217 - 921) / 921] x 100
Subtract the new number by the original number
217 - 921 = -704
-704 ÷ 921 = -0.7643865363735071
-0.7643865363735071 x 100 = -76.44%