-78.07% is the change from 921 to 202
Calculation steps:
[( 202 - 921 ) ÷ 921] x 100 = -78.07%
Formula
Percentage change = [(202 - 921) / 921] x 100
Subtract the new number by the original number
202 - 921 = -719
-719 ÷ 921 = -0.7806731813246471
-0.7806731813246471 x 100 = -78.07%