-34.76% is the change from 210 to 137
Calculation steps:
[( 137 - 210 ) ÷ 210] x 100 = -34.76%
Formula
Percentage change = [(137 - 210) / 210] x 100
Subtract the new number by the original number
137 - 210 = -73
-73 ÷ 210 = -0.3476190476190476
-0.3476190476190476 x 100 = -34.76%