-23.42% is the change from 222 to 170
Calculation steps:
[( 170 - 222 ) ÷ 222] x 100 = -23.42%
Formula
Percentage change = [(170 - 222) / 222] x 100
Subtract the new number by the original number
170 - 222 = -52
-52 ÷ 222 = -0.23423423423423423
-0.23423423423423423 x 100 = -23.42%