-77.63% is the change from 921 to 206
Calculation steps:
[( 206 - 921 ) ÷ 921] x 100 = -77.63%
Formula
Percentage change = [(206 - 921) / 921] x 100
Subtract the new number by the original number
206 - 921 = -715
-715 ÷ 921 = -0.7763300760043431
-0.7763300760043431 x 100 = -77.63%