-78.3% is the change from 917 to 199
Calculation steps:
[( 199 - 917 ) ÷ 917] x 100 = -78.3%
Formula
Percentage change = [(199 - 917) / 917] x 100
Subtract the new number by the original number
199 - 917 = -718
-718 ÷ 917 = -0.7829880043620502
-0.7829880043620502 x 100 = -78.3%