-78.1% is the change from 557 to 122
Calculation steps:
[( 122 - 557 ) ÷ 557] x 100 = -78.1%
Formula
Percentage change = [(122 - 557) / 557] x 100
Subtract the new number by the original number
122 - 557 = -435
-435 ÷ 557 = -0.7809694793536804
-0.7809694793536804 x 100 = -78.1%