-75.98% is the change from 920 to 221
Calculation steps:
[( 221 - 920 ) ÷ 920] x 100 = -75.98%
Formula
Percentage change = [(221 - 920) / 920] x 100
Subtract the new number by the original number
221 - 920 = -699
-699 ÷ 920 = -0.7597826086956522
-0.7597826086956522 x 100 = -75.98%